CONTENTS. 



Foreword, .... 



Introduction, 



Synonomy, .... 



Common names applied to species. 



Foreign history, . 



History in United States, 



Discovery of the insect, . 



Identifying the species, . 



A previous record in Massachusetts, 



Preliminary investigations, 



Plans made for further investigations. 



Control measures during spring of 1918, 



Control measures during autumn of 1918, 



Quarantine measures enacted and their origin. 

 National quarantine measures. 

 State quarantine measures, . 

 Geographical distribution, 



In the Old World, . 



In the United States, 



Territory examined in Massachusetts, 

 Territory examined in New Hampshire, 

 Territory examined in Maine, . 

 Territory examined in Rhode Island and Connecticut, 

 Food plants. 



In the Old World, 



In the United States (Massachusetts), 

 List of food plants, . 

 Character and extent of injury, 



Corn, .... 



Other food plants, . 

 Descriptions of the different stages, 



The egg. 



The larva, 



The pupa. 



The adult, 

 Life history, 



First generation, 



Second generation. 

 Seasonal history and development, 



Nimaber of generations, . 



Seasonal history. 



Seasonal abundance, 

 Habits of larvjB, . 



Hatching, 



Habits when attacking corn. 



Habits when attacking dock. 



Habits when attacking Lady's Thumb, 



Habits when attacking barnyard grass. 



Molting, ..... 



Length of larval life without food, . 



Unusual habits, .... 



